hg: jdk8u/jdk8u-dev/hotspot: 8221342: [TESTBUG] Generate Dockerfile for docker testing

[sgehwolf at redhat.com]

Changeset: de90eec825b4
Author:    mseledtsov
Date:      2019-03-26 13:25 -0700
URL:       https://hg.openjdk.java.net/jdk8u/jdk8u-dev/hotspot/rev/de90eec825b4

8221342: [TESTBUG] Generate Dockerfile for docker testing
Summary: Dockerfile is generated; introduced properties to specify custom base image
Reviewed-by: sgehwolf, dholmes, jiefu

- test/runtime/containers/docker/Dockerfile-BasicTest
- test/runtime/containers/docker/Dockerfile-BasicTest-aarch64
- test/runtime/containers/docker/Dockerfile-BasicTest-ppc64le
- test/runtime/containers/docker/Dockerfile-BasicTest-s390x
! test/testlibrary/com/oracle/java/testlibrary/DockerTestUtils.java
+ test/testlibrary/com/oracle/java/testlibrary/DockerfileConfig.java